WEST HOLLYWOOD (CBSLA.com) — Several streets Sunday were closed for the 43rd LA PRIDE Parade in West Hollywood.

Organizers anticipated that more than 400,000 spectators would attend the parade, which began at 11 a.m., along Santa Monica Boulevard to Robertson Boulevard.

“Extra” host Maria Menounos was chosen as grand marshal “for her dedication to the LGBT community and her continuing efforts using her platform for equality,” according to organizers.

“The LGBT Pride Parade represents something truly American,” Menounos said. “It’s a celebration of community, a celebration of uniqueness, diversity and progress and it’s the celebration of a new United States where we do more than tolerate or accept our gay brothers and sisters, but embrace and celebrate them.”

The parade culminates several days of public events, including 5K and 10K races as part of Pride Run 2013. KNX 1070’s Ron Kilgore said the race/walk is expected to benefit Project 10 and programs for the homeless.